Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '6de7af78381c407622a45f03281c7cb6e69ac0a2241a32c4f8fdb261503dfac0' 
  AND token = 'YlIErItoXacJaTB4TX/BIWW0Q6hIWIp92qb/7Bmu3hk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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