Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd402db5abf526aa160df270cee43cbcd5cba9fd23315632439e3afc360b2a428' 
  AND token = 'FIrEtsoMus0ZB9AcN/HQa/X180opYSH8M3XfX/h13VM=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00015

JSON explain

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