Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'da15c2e6f82ce18721a2bc31b15a192b11e711f5939f9ef5f87ce918f58cb54e' 
  AND token = 'gx4nwL1fh8gZABAcJZOUf7BrhuN/uXD7Ygd9fplQ9io=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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