Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2862adc193186fb9a9e7b3726ecc8ed2dbe16a796dba3cf355cae18ba387af16' 
  AND token = '7cIWTYPE0PVsslZclALzibKIkFs0enRpeFnSmQSe720=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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