Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ffa7960c9e119316e907a5c0399dac7c30efb8200614de896d5811090274e119' 
  AND token = 'HZjcEs/DaKkIqPUUAc+rPrY9jGWT4f01eemoVy2RC2c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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