SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '133c459b1d259464b8f763d0b71e91d6f49a17b9b9b594043b374165787b4f5a' 
  AND token = 'pNc14phHKKajwvAg2R1glVSJ5sqYYTfuCqtgk/C/bZ4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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