Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b566126ca264b538d4094e4b46b78eb5fe44745a6a331e7e56ef8fe4968c325b' 
  AND token = 'bnodIKLatB3La1O7E2lA+fqKEp28vrlj4Ffhyiqkgos=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00016

JSON explain

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