Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7222eff6ff955ac43c1f9527f2c380683e71b987f4e0daa7a4bd8ec6b7eff859' 
  AND token = '8pRbXcnMrr7B8Ea9/1Y8O1/oq7tqBBzJgxQl3aleaPY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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