Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = 'eb109d3e0cf45686057c5f06f242dce8a5885994a13c0dafc21c8a8d6df73da8' 
  AND token = 'XPETdMD09N/1H2ZihF5doEUWrNp1bNDg65s21iiHQxE=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00027

JSON explain

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