Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'b72bbb22b17707811087e719b1eedfd04858ed4aaab600b0b160f5b3a8cafbe4' 
  AND token = 'bZyUeXByEK1o/TkLlGxraoM59248neUn2SbYwuRAs/s=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00017

JSON explain

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