Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e949d15180eabed9b390fe9393f34273ac0bf8d25104b2089f826b255a9fefe5' 
  AND token = '1u8WC2xBIqwZcCf/5UigwSVjgDxVFdLxcwppHFFrPRI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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