Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '1afc0ff308cf9d1d68f59b644474aad1f3b4d29c2733fd281dd422db1c3af81a' 
  AND token = 'YPE2dLKS9hFZyVRACCs2n03ZZ+URJS89f6hWnSAWaXw=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00047

JSON explain

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