Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c99317df9b82a1eff1894fbd5051f26f00f9b866b9fada286a59fe00bd2cd4d2' 
  AND token = 'dbPjFowg7xfbKNu05i8+5kww/RqSgh7kICpUoHqg3hY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00050

JSON explain

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