Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '101fd9bba8696f4707dd28c72a092e5506e786fe1b57a593663cb3c74b11f28a' 
  AND token = 'IXMCecq2jGxpVeaDyvNrpe5Zm+TEJTnagXJ285vAvzI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00156

JSON explain

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