Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c0960a70a856e9e8ebf75397cec4ca2db548e36f110db5338cceb29df8247e23' 
  AND token = 'BufQZAYMC6TowHzMMnA0gVM6oomqkLfM92TJPVQ1q4k=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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