Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c767179d44e59c93882cc7e7937faedfe71891c94e4291324d131646546fa25e' 
  AND token = 's57oZn0lXln1DTqvfVHdapQ2H8KvWjTJIV3eI2J/Go0=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00035

JSON explain

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