Sandbox

SELECT 
  1 
FROM 
  cscart_june_setuplock_keys 
WHERE 
  key_id = 'a9ec9ac9abfced773f36eb019ee723082b6292c696451341c97cc6b9d49697b1' 
  AND token = 'I0ENfduHv4fHO6L4Zhr9NYRiyjua85q5c3pS5se6Q+4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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