Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c1c2ffd9d1f0fd165c345b96ad8554cec04d6525cf4824133ab50874da5bde5d' 
  AND token = 'RNsm3v4JiWOFxKwmopAsWuzJLC4flXUzlfGeOdOEh6M=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00043

JSON explain

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