Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '87bbf09feee2462377c6a08216927fabe5212de3d32e4b3b1b062cb9d22a80cd' 
  AND token = 'JGM9Fe6mzW61OPDhoztmQkmVEa54I5PyZHpCKAXIw40=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00039

JSON explain

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