Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '9b275784a2869c5a922c8c70f3d3afc11a4623a8d07497a500eec3d751dd012e' 
  AND token = '9pSwSO9PPCmWnwk4sVPOYmEnV8hj6HwVmx3PldRX/aA=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00032

JSON explain

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