Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '2179de68b83bfc6d5fe74c39f0d14c66586fa6f78a7e73492d409bbe1e65b648' 
  AND token = '3Gh3Q1J2CzF0mt77x/ZfbMhpptOOR6qgcqa9qRYmSNQ=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00019

JSON explain

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