Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '400f8c09cf89d5901109ea39c131e8499d0381aece5466dc2aaea14929325863' 
  AND token = 'mjnxAfsMwHev1cq/9wc00vYs+oBWoEwxw0S0e2xV3kE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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