Sandbox

SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'ddc6b4b377d419559e1b6a4dbca0fcc0b2d0573505fd14119ab8657dd9051dd7' 
  AND token = 'jlSa7R0faUg8sskV6xIEBQlQUUb51f0upiLA/rVtC6I=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00030

JSON explain

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