Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '366d3702e451f5cd79b92cc7aa5c74ce66eadbd47d308f77526438170a06eeab' 
  AND token = 'dy1U8IV29ygozlTi1JrAn132UutM3Y9q3ceZNOTf2gw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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