Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '95c6e64f7c1c3a3921677101ae0b4f6cd0b2c5bfe00506fd65dbcb7ad3b5c5d2' 
  AND token = 'tEg/JocGTc0TfelRfvP1edX4wYZEEDfmjzihxCWPJ+s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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