Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '58c58ed1714653a386262a604861a9955781dcf6906763d55ec63267375ad5fe' 
  AND token = '4ETCBL6fsKI3qH+0rRB7zKOX9ct0gPYl9mQxIFIYqnY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00033

JSON explain

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