Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7a731c1a40db14b356add354de0f711ba44b499108018812c03fce183804437e' 
  AND token = 'Zzxq+Am9HPwxJgJQ8UaSIr43KJXSPXeJ53msWkzvnb8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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