Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '76e8a86de78e2dc808187ab77f78fc61a9eb80023d8f4cc4033a386428d9d3a2' 
  AND token = 'jl7aIrTnBxkKEF4e/V0HKUIfXUJSAVftUDF28Q9q+CQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00046

JSON explain

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