Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '7191182b819062a7d9df664ad1687cad569bf36ce9c7d402064de3ed0dd643a6' 
  AND token = '7OcaIDkwIbMeDKGCny3bG/VGrqm8tS+qXS1NY2blicY=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00102

JSON explain

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