Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2e7e0d3f9d57e3285c2cd522a4b877856c5f69467cc8fd401d4d36d2285dbdbf' 
  AND token = 'V0jLFPTrvBcw5qEjRg9QvDUTir52fJKE8rv286iOPyI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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