Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '61daa8d4909ac4eded3becca4100d5f5bdfdd7486346793f4c190ffe981c20a7' 
  AND token = 'XBpcBHs86YmOn2ZIidLiqmABQZscPGS3+NGCZFizjng=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00028

JSON explain

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