Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'daea9ade3fc3d6e25850b250399a1b8d3a0751b5d68c471474018531c14ddcec' 
  AND token = 'tTLNfwkBIK2IMVNp6UrwrT58ZD6R5JEO2L6M2MXc19A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

{
  "query_block": {
    "select_id": 1,
    "message": "no matching row in const table"
  }
}