Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '437ecd820f330780ea44cc269501d0756f6db005cfba4d78cc9efa8655d57752' 
  AND token = 'RUnRJ9tbEZv2P5/0gWL/SxPvwk0ShkX7QXcq2qv99ts=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00034

JSON explain

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