Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'aff49499db38f65d0e03896808e6e56e29bdb87b84919333a2ccba5a978c1f63' 
  AND token = 'I5mTzlsNieF5jt7Mq5Wn0DYqd31BXOd4cTi3104s13k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00042

JSON explain

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