Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = '450dd8e5f682f9dc44e54806a1cdec3b41745b830ae45c148c4d5d86011cc496' 
  AND token = 'x3ybbOocivXUkwjpG93zt0o/XZ3tUhQ3SPF3aDuSORI=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00060

JSON explain

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