SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '00ca504241158f1397fa615fa533f639102451f3a3fe1bf4aa1d152bbd02dd78' 
  AND token = 'RKLG0WwW/Yv0yp9+vmVfDzCsVeqxFzbmPz7kLqnBAmo=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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