Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'd75da165dbb3c1e807892e447c5cd8a8e4951dcbb10803b06927d0733e5d81d9' 
  AND token = 'oaLoJnlBrfpnbMSzRItfEuDcNZ8KhE904TCn3Dz2RV8=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00021

JSON explain

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