Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'f72c1b273db8f221f6b409b73caab8bc9088167e0cd86e65c639f2bb8057af01' 
  AND token = 'baeaUXpzy/izNkhOaFMpMpHuYMNVIcR7Hg5LJ9PIhlU=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00044

JSON explain

{
  "query_block": {
    "select_id": 1,
    "table": {
      "message": "Impossible WHERE noticed after reading const tables"
    }
  }
}