Sandbox

SELECT 
  1 
FROM 
  cscart_aprillock_keys 
WHERE 
  key_id = '06eecd50c4ab94f7117abdb9267ecb71d21d6407eb275126cf15d599d7705503' 
  AND token = 'WhzQaPaaaZlIEGhgAcNJdwzeRJkSTVimTcLVtVPV28w=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00041

JSON explain

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