Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '605279de10b54cd4cea3f92fabaa9fc5e2a59cfa3af7bc1601bf8e0901342e82' 
  AND token = '3t38lewU6Nawg+zY52K633BNo/2IJHb3W3Ynw8Tx9Xk=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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