Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c25290c6764b1f3ad5057ba13724ce1b621fbbaaca337dde010b07f92e1f470b' 
  AND token = 'P65nTtp52lsm/C9n/I2LKQQtx609e8vVPcumCV9CWgY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00029

JSON explain

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