Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2faf7e10213b63b98a6bbbe61a122567df4c9070b142bbbcc609727fe8953065' 
  AND token = 'M1bJrTImX+L9jwaHFft1JRudRiu5cT02QfrhBScPLEg=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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