Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'e77fa7823831ab77241fda086b57ef49d74265117584bffd29ce811b2fc9023f' 
  AND token = 'zdUuiT5gy4ed4w2kcM6fx+r8B4wBdqjMlE36s9cjbkE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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