Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '580199cc185574e085058ca99c01d94c75264345f8cc27a57a573cccefb98bd7' 
  AND token = 'nnI4q2OONhdpo+Uu3c6NoNpdwZvHn7TWBCXOzQdTo4g=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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