Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '53fa71f1c9828f8beacfbeea05916243590dbf04bfaa192ac6c33bd94cc66528' 
  AND token = 'Bp+Z4dzA3qPMIyheaChK8m5gAsWl3Wx4YyI7MObj6Es=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00036

JSON explain

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