Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '17338e1113e2c7fc8e3537dbbdb902acda49db58b453ed23f993e36d0f422b40' 
  AND token = 'K6+siyCwIuD+XZXRGkBRy9sPsillrlqruQnNdWNDnKA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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