Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'f188ad13e71efe761c7b33ee3e1093105b77597ba7f1248bd5d2e68e9f906958' 
  AND token = 'cQq9WFncD2DrKaxeJlaopOTlN5xl3JjsEvJqwG78HTE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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