Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '2f01aaf4a1211dd5c18c0d964a0cbe926a0cf6bc4d13b315d1b9b612e5d094db' 
  AND token = 'pf/Hg+6OigvZaFHFGJIDqe7XZ9sLLefmCQ10iRdZXwA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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