Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e0783f01d23167a747b60aecb2dbc0428d6c0f210ed247806dc070ec43bfee09' 
  AND token = 'CW6+NRyRnPFuATqaqhAyv5DRrEmM26C6Bx6C8gNHSL4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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