Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '14c2912dad5b87542d2061ef4052662c1d2bfef14ee9be67bb3a64d38d4bf856' 
  AND token = 'rVRwmELjbm5D/3CxC8Bo1WSOZsYXn9InpBAYfuugf4c=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00038

JSON explain

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