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SELECT 
  1 
FROM 
  cscart_lock_keys 
WHERE 
  key_id = 'c04d693ba0e7b8dacef9dd3d57a8a824cc1b717f2f6ecc67661fcb3c93429116' 
  AND token = 'adnMlQTuJ7dsNGtKp0tMjAaa1RcJWfwuQlKKSkBTZ0o=' 
  AND expiry_at > UNIX_TIMESTAMP(NOW())

Query time 0.00024

JSON explain

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