Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c55149578b069d9809e726fe60de79b911cc1c1624b2194c706874bd1aecea20' 
  AND token = 'ZZhh7ey+mtCXy7/gjCkk5nmbmmr9wYOE40BJCaVd5tE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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