Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f5499f1c853a7a3ae5e44ed5bf613438a63acb82d0037ebed3e7b2f997e158f4' 
  AND token = 'WyiK7/nwsFhJGxz+td3095h4NLhwZtGH+oQAAClM/0A=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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