Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '27b343cd0200ae84a77cd857e9d795e4d8a38f7d10c60548148ccb09c92380b4' 
  AND token = 'rL+cMMZ8a/187WohhKiHoyqBze+F3JCf+qHSJBs9T60=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00031

JSON explain

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