Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7c426e6e4bca3c35b1c891a38292c92ad5df7a161fac18355d417826c8a3d666' 
  AND token = '4M65wQhXLpMa+GX3REyyiXDSoOujOEiWD7lx5k7sfJA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00023

JSON explain

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