Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'a143e08bd48d2ef9914d73ab9dedc8eb2e9722bd1b3067d90b947453f551dc1e' 
  AND token = 'cXuluDgfCZbDc/kLvIrN3LBP09l7VzZf/7uM2Qk4kec=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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