Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '898ffd02ec2180bc4d28ba1ac6d2429cbb036f5a1dcac5bdd6b8846d57197506' 
  AND token = 'G7GUFveqI21q6qpIQtzz3vETQBg2MDCXASOPXNJY5uU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00018

JSON explain

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