Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0dbcd919866192e3aa29c83b201dea341257710fdaf70b40a7fab8b394e64eb6' 
  AND token = 'ZyeaD9hqERFUBHprlJUccSIeRTacc3JRFsZspTk5CgY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}