Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '055f9c1eb8d3729b2b0c3ac223f997427e37ddd8a968ef62ca0acfef76feee4b' 
  AND token = 'kcqOeKsEnSsEL5cdPoLBh4YTsJ9NNQ00c9FNte5iJWY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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