Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd14502e2a69d763bdcb9d3640f95043e832d06bf162efceac532bdb581a62b49' 
  AND token = 'ceLFjl77rKRDyfRZ2Ku6KtD0A3+u3ZGjhGOUBhhTjzk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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