Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '0623f44452ad891ff292bd2238318a5fbf1de2ade3a6b17e11c78383b134ae89' 
  AND token = 'niAomBv+3lHDvNv2uLoctp1vuHOtDDZMK6HdtYqHjz4=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00037

JSON explain

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