Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'aa7b035532d620818bff18c14c42d26514e54bc3e9d1f910e95621e38c2d2511' 
  AND token = 'mtRgFh1grepiTyqLa9nUoYBxt83tAyTy9vbT+IEbR6Q=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00020

JSON explain

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