Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1ccffc5e9fe3543539af8eb11b3638206df7ffe984b32d7f0c202d850f5dc677' 
  AND token = 'bFJUKPkkziUF8xeXtNX0/DWRx7XS4E7fxZr9tj4jA84=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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